Coolbits is not supported anymore for Fermi and Kepler. Despite Nvidia advertising their unified driver architecture with equal features on all platforms, it is actually impossible to software-overclock 4xx and newer cards on GNU/Linux. nvclock doesn't work either with the newer cards.
The only way is to flash a modified VBIOS. But most of the modified ones floating around on the net, for example the one on TechInferno by svl7, disable GPU Boost and set a low base clock, relying on the user to set the clock rate in software.
You could edit one yourself (Kepler BIOS Tweaker 1.26 (not 1.25) supports base clock, boost and TDP editing for recent cards), but I'd advise you to have a backup card for recovering if it goes wrong.

Building failed for me too. Although not during compilation:
Using make 3.82, gcc 4.6.2, binutils 2.22.0, Kernel 3.2.5 on Arch Linux.

I had to add -lpthread to CMAKE_EXE_LINKER_FLAGS:STRING in CMakeCache.txt after configuration to make it work.